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First sighting of active fluid venting in the Gulf of Cadiz
Van Rooij, D.; Depreiter, D.; Bouimetarhan, I.; De Boever, E.; De Rycker, K.; Foubert, A.; Huvenne, V.; Reveillaud, J.; Staelens, P.; Vercruysse, J.; Versteeg, W.; Henriet, J.-P. (2005). First sighting of active fluid venting in the Gulf of Cadiz. Eos, Trans. (Wash. D.C.) 86(49): 509-511. dx.doi.org/10.1029/2005EO490001
In: Eos, Transactions, American Geophysical Union. American Geophysical Union: Washington. ISSN 0096-3941; e-ISSN 2324-9250, meer
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  • Van Rooij, D., meer
  • Depreiter, D., meer
  • Bouimetarhan, I.
  • De Boever, E., meer
  • Staelens, P., meer
  • Vercruysse, J., meer
  • Versteeg, W., meer
  • Henriet, J.-P., meer
Abstract
    The Mercator mud volcano, located in the Gulf of Cadiz off the coasts of Spain, Portugal, and Morocco (Figure 1), may provide an accessible field laboratory for studying local active venting and its possible internal and external controls. The recent discovery of the first active deep ocean ‘brown smoker’ chimney in this area can possibly be linked with the disintegration of a gas hydrate layer between the seafloor and a subsurface level that is dependent on pressure and temperature. For more than a decade, the international marine scientific community has deployed considerable efforts in exploring the Gulf of Cadiz. Since the discovery of the Gulf's first mud volcano in 1999, research cruises have steadily unveiled one mud volcano after another [Gardner, 2001; Pinheiro et al., 2003; Somoza et al., 2003]. These mud volcanoes are clustered in several fields on the Portuguese, Spanish, and Moroccan margins (Figure 1). Extensive geophysical evidence of shallow gas and subsurface fluid flow has been reported in the Gulf of Cadiz [Baraza and Ercilla, 1996; Pinheiro et al., 2003].
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